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Machine translation
1. (WO2014208828) HYDRAULIC CIRCUIT FOR CONSTRUCTION MACHINERY HAVING FLOATING FUNCTION AND METHOD FOR CONTROLLING FLOATING FUNCTION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2014/208828    International Application No.:    PCT/KR2013/009788
Publication Date: 31.12.2014 International Filing Date: 31.10.2013
IPC:
F15B 13/043 (2006.01), E02F 9/22 (2006.01), F15B 19/00 (2006.01)
Applicants: VOLVO CONSTRUCTION EQUIPMENT AB [SE/SE]; S-631 85 Eskilstuna (SE).
JOUNG, Hea-Gyoon [KR/KR]; (KR) (US only).
KIM, Sung-Gon [KR/KR]; (KR) (US only)
Inventors: JOUNG, Hea-Gyoon; (KR).
KIM, Sung-Gon; (KR)
Agent: YOON, Eui-Seoup; 17F., Unik Bldg. 706-13, Yeoksam-dong Gangnam-gu Seoul 135-080 (KR)
Priority Data:
PCT/KR2013/005742 28.06.2013 KR
Title (EN) HYDRAULIC CIRCUIT FOR CONSTRUCTION MACHINERY HAVING FLOATING FUNCTION AND METHOD FOR CONTROLLING FLOATING FUNCTION
(FR) CIRCUIT HYDRAULIQUE POUR ENGINS DE CONSTRUCTION POSSÉDANT UNE FONCTION DE FLOTTEMENT ET PROCÉDÉ DE COMMANDE DE LA FONCTION FLOTTANTE
(KO) 플로팅기능을 갖는 건설기계용 유압회로 및 플로팅기능 제어방법
Abstract: front page image
(EN)Disclosed are a hydraulic circuit for using a hydraulic fluid in a hydraulic pump in another hydraulic actuator, during levelling and grading work by means of an excavator, and a method for controlling a floating function. A hydraulic circuit for construction machinery having a floating function, according to the present invention, is provided with: two or more hydraulic pumps; a hydraulic cylinder connected to the hydraulic pumps; a boom driving control valve provided on the flow path between the hydraulic pump on one side and the hydraulic cylinder; a boom confluence control valve provided on the flow path between the hydraulic pump on the other side and the hydraulic cylinder; an operating lever; a first sensor for measuring the hydraulic fluid pressure of a large chamber of the hydraulic cylinder; a second sensor for measuring the boom lowering pilot pressure applied to one end of the boom driving control valve; a control valve provided on the flow path between the operating lever and the other ends of the boom driving control valve and the boom confluence control valve.
(FR)La présente invention se rapporte à un circuit hydraulique pour utiliser un fluide hydraulique dans une pompe hydraulique dans un autre actionneur hydraulique, au cours de travaux de nivellement et de terrassement au moyen d'une excavatrice, et à un procédé de commande d'une fonction flottante. Un circuit hydraulique pour engin de construction ayant une fonction flottante, conformément à la présente invention, comprend : deux pompes hydraulique ou plus ; un vérin hydraulique raccordé à la pompe hydraulique ; une soupape de commande d'entraînement de flèche disposée sur la voie d'écoulement entre la pompe hydraulique d'un côté et le vérin hydraulique ; une soupape de commande de confluence de flèche disposée sur la voie d'écoulement entre la pompe hydraulique de l'autre côté et le vérin hydraulique ; un levier de commande ; un premier capteur pour mesurer la pression de fluide hydraulique d'une grande chambre du vérin hydraulique ; un deuxième capteur pour mesurer la pression pilote d'abaissement de flèche appliquée sur une extrémité de la soupape de commande d'entraînement de flèche ; une soupape de commande disposée sur la voie d'écoulement entre le levier d'actionnement et l'autre extrémité de la soupape de commande d'entraînement de flèche et la soupape de commande de confluence de flèche.
(KO)굴삭기를 이용하여 평탄 정지작업시 유압펌프의 작동유를 다른 유압 액츄에이터에 이용하기 위한 유압회로 및 플로팅기능 제어방법을 개시한다. 본 발명에 따른 건설기계용 유압회로에 있어서, 두개 이상의 유압펌프; 상기 유압펌프에 연결되는 유압실린더; 일측 유압펌프와 유압실린더 사이의 유로에 설치되는 붐구동용 제어밸브; 타측 유압펌프와 유압실린더 사이의 유로에 설치되는 붐합류용 제어밸브; 조작레버; 유압실린더의 라지챔버측 작동유 압력을 계측하는 제1센서; 붐구동용 제어밸브의 타단에 인가되는 붐하강 파일럿압력을 계측하는 제2센서; 상기 조작레버와 상기 붐구동용 제어밸브 및 붐합류용 제어밸브의 타단 사이의 유로에 설치되는 제어밸브;를 구비하는 것을 특징으로 하는 플로팅기능을 갖는 건설기계용 유압회로를 제공한다.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).
Publication Language: Korean (KO)
Filing Language: Korean (KO)